Allegations Only · No Settlement Yet
This article describes a class action complaint. The statements below are unproven allegations. Garmin has not been found liable, there is no certified class, and nothing to claim at this time. This page is informational and is not legal advice.
What Is This About?
A proposed class action accuses Garmin of marketing its Index S2 smart scale as a device that accurately measures body composition — body fat percentage, BMI, skeletal muscle mass, bone mass and body water percentage — when, the complaint alleges, the technology behind those readings cannot deliver that accuracy. The case is captioned Maurer v. Garmin International, Inc., No. 1:26-cv-06389, filed May 29, 2026 in the U.S. District Court for the Northern District of Illinois. The defendants named are Garmin International, Inc., Garmin USA, Inc. and Garmin Ltd.According to the complaint, the named plaintiff, an Illinois resident, bought an Index S2 in August 2024 through Garmin’s online storefront for $149.99 and later found that his scale’s body-fat and BMI readings differed significantly from a DEXA scan — the clinical method the complaint describes as the “gold standard” for body composition. Importantly, the lawsuit is about those body composition outputs, not the scale’s ability to weigh a person. These are allegations; nothing has been proven, no class has been certified, and there is nothing to claim.
The “Deceptive Biometric Marketing” Allegation
The complaint describes what it calls a uniform “Deceptive Biometric Marketing” campaign: advertising, packaging and product pages that, the plaintiff alleges, told consumers the Index S2 measures metrics like body fat percentage, BMI, skeletal muscle mass, bone mass and body water percentage. The Index S2 relies on foot-to-foot bioelectrical impedance analysis (BIA), which sends a small electrical current up through the feet to estimate body composition.The plaintiff alleges that consumer-grade foot-to-foot BIA scales cannot produce the accurate body composition figures Garmin advertises. The complaint points to published research on foot-to-foot impedance scales — including a 2021 peer-reviewed study in JMIR mHealth and uHealth reporting that such scales can underestimate fat and muscle mass by several kilograms compared with DEXA — to support the claim that the marketed accuracy is not achievable. Garmin has not responded to these allegations in court, and a complaint reflects only one side’s position.
What the Lawsuit Claims and Seeks
The complaint brings claims under the Illinois Consumer Fraud and Deceptive Business Practices Act, along with common law fraud, breach of contract and unjust enrichment. The plaintiff seeks to represent a proposed class of purchasers who, the complaint alleges, bought the scale based on the same body composition marketing.The complaint demands a jury trial and seeks declaratory and injunctive relief together with compensatory, statutory and exemplary damages for the named plaintiff and the proposed class. It does not specify a total dollar figure, but invokes the standard federal jurisdictional threshold of more than $5 million in aggregate for the proposed class. Whether any class is certified, and what relief (if any) follows, is for the court to decide.
Who Is Affected?
No class has been certified, so there is no defined group with rights to assert yet. As pleaded, the case is aimed at consumers who purchased the Garmin Index S2 smart scale in reliance on its body composition accuracy claims. The exact class definition — including geographic scope and purchase dates — would be set by the court if the case advances to certification.What Happens Next?
At the complaint stage, the next steps typically include Garmin’s response (an answer or a motion to dismiss) and, if the case survives, briefing on class certification. There is no settlement, no certified class, and no claim form. We will update this page if a class is certified, the case is dismissed, or a settlement with a claims process is reached.Frequently Asked Questions
What does the Garmin smart scale lawsuit allege?
The complaint alleges Garmin marketed the Index S2 smart scale as accurately measuring body composition metrics — body fat percentage, BMI, skeletal muscle mass, bone mass and body water — when, according to the plaintiff, the foot-to-foot bioelectrical impedance technology cannot deliver those readings accurately. These are unproven allegations; Garmin has not been found liable.
Is the lawsuit about the scale's weight measurement?
No. According to the complaint, the case concerns the scale’s body composition outputs — body fat percentage, BMI, muscle mass and related metrics — not its ability to measure weight.
Can I file a claim or join the Garmin lawsuit right now?
No. This is a proposed class action at the complaint stage. No class has been certified, there is no settlement, and there is no claim form. There is nothing to claim at this time.
Which product and time period does the lawsuit involve?
The complaint targets the Garmin Index S2 Smart Scale and its body composition marketing. The named plaintiff says he bought the Index S2 in August 2024. The proposed class scope and dates would be set by the court if and when a class is certified.
Sources
- Maurer v. Garmin International, Inc., No. 1:26-cv-06389 (N.D. Ill., filed May 29, 2026) — docket via CourtListener.
- Gadgets & Wearables — Garmin sued over Index S2 smart scale accuracy claims
- Notebookcheck — Lawsuit accuses Garmin of misleading customers
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